<script setup>
import { ref } from 'vue'
import { Plus, Upload } from '@element-plus/icons-vue'
import { adminUserStore } from '@/stores'
import { adminAvatarUpService } from '@/api/admin/admininfo'
const adminStore = adminUserStore()
const imgUrl = ref(adminStore.admin.avatar)
const id = ref(adminStore.admin.id)
const uploadRef = ref()
const fileSizeInKB = ref()
const onSelectFile = (uploadFile) => {
  // 获取图片数据大小
  const fileSizeInBytes = uploadFile.raw.size
  // 转换为 KB
  fileSizeInKB.value = fileSizeInBytes / 1024
  // 基于 FileReader 读取图片做预览
  const reader = new FileReader()
  reader.readAsDataURL(uploadFile.raw)
  reader.onload = () => {
    imgUrl.value = reader.result
  }
}

const onUpdateAvatar = () => {
  // 发送请求更新头像
  if (fileSizeInKB.value > 25) {
    ElMessage.error('请上传的头像小于25KB')
  } else {
    adminAvatarUpService({ id: id.value, avatar: imgUrl.value })
      .then((response) => {
        if (response.data.status == 200) {
          ElMessage.success(response.data.message)
          adminStore.getAdmin()
        } else {
          ElMessage.error(response.data.message)
        }
      })
      .catch((error) => {
        ElMessage.error(error)
      })
  }
}
</script>

<template>
  <page-container title="更换头像">
    <el-tooltip
      class="box-item"
      effect="dark"
      content="注意：修改的头像文件大小必须要小于25KB"
      placement="top-start"
    >
      <el-upload
        ref="uploadRef"
        :auto-upload="false"
        class="avatar-uploader"
        :show-file-list="false"
        :on-change="onSelectFile"
      >
        <img v-if="imgUrl" :src="imgUrl" class="avatar" />
        <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
      </el-upload>
    </el-tooltip>

    <br />
    <el-tooltip
      class="box-item"
      effect="dark"
      content="注意：修改的头像文件大小必须要小于25KB"
      placement="top-start"
    >
      <el-button
        @click="uploadRef.$el.querySelector('input').click()"
        type="primary"
        :icon="Plus"
        size="large"
        >选择图片</el-button
      >
    </el-tooltip>
    <el-tooltip
      class="box-item"
      effect="dark"
      content="注意：修改的头像文件大小必须要小于25KB"
      placement="top-start"
    >
      <el-button
        @click="onUpdateAvatar"
        type="success"
        :icon="Upload"
        size="large"
        >上传头像</el-button
      >
    </el-tooltip>
  </page-container>
</template>

<style lang="scss" scoped>
.avatar-uploader {
  :deep() {
    .avatar {
      width: 278px;
      height: 278px;
      display: block;
    }
    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }
    .el-upload:hover {
      border-color: var(--el-color-primary);
    }
    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 278px;
      height: 278px;
      text-align: center;
    }
  }
}
</style>
